Cleaning scum from shower floor tiles
Five years after the renovation, I've noticed that there is a greasy soap film that's built up on the master bath shower tile floor surface. I can scratch it away with my fingernail, it's a white waxy substance, and after many google searches it's probably the fatty acid buildup from bar soap and shampoo/conditioners. The 2x2 tiles are glazed porcelain with a 1/4" dark grout.
I'm about to reseal the grout, and have cleaned it with oxyclean and citric acid based cleaners as recommended to kill the bacteria and mildew spots.
I've been able to scrape off most of the film by softening it with a citric acid cleaner and using a paint scraper, but what a pain. Is there a better and easier way to do this without harming the grout or tile?
And we're not using the cheap bar soaps anymore.